Home / 135,572.37-187,047.09-78,203.97

Finding the Fourth Proportional to 135,572.37, 187,047.09 and 78,203.97

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Solution

The fourth proportional to 135,572.37, 187,047.09 and 78,203.97 is: 107,896.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,572.37 : 187,047.09 = 78,203.97 : x
  2. Step 2: Convert to fraction form
    135,572.37/187,047.09 = 78,203.97/x
  3. Step 3: Cross multiply
    135,572.37x = 187,047.09 × 78,203.97
  4. Step 4: Simplify right side
    135,572.37x = 14,627,825,014.95
  5. Step 5: Solve for x
    x = 14,627,825,014.95/135,572.37
  6. Step 6: Final answer
    x = 107,896.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.